/Engine/Plugins/EnhancedInput/Source/EnhancedInput/Public/UserSettings/EnhancedInputUserSettings.h
The "Slot" that a player mappable key is in. Used by UI to allow for multiple keys to be bound by the player for a single player mapping
enum EPlayerMappableKeySlot { First = 0, Second, Third, Fourth, Fifth, Sixth, Seventh, Unspecified, Max, }